Sweden-Number/objects/bitmap.c

317 lines
8.9 KiB
C

/*
* GDI bitmap objects
*
* Copyright 1993 Alexandre Julliard
*/
static char Copyright[] = "Copyright Alexandre Julliard, 1993";
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "gdi.h"
#include "bitmap.h"
/* Handle of the bitmap selected by default in a memory DC */
HBITMAP BITMAP_hbitmapMemDC = 0;
/* GCs used for B&W and color bitmap operations */
GC BITMAP_monoGC = 0, BITMAP_colorGC = 0;
/***********************************************************************
* BITMAP_Init
*/
BOOL BITMAP_Init()
{
Pixmap tmpPixmap;
/* Create the necessary GCs */
if ((tmpPixmap = XCreatePixmap( display, rootWindow, 1, 1, 1 )))
{
BITMAP_monoGC = XCreateGC( display, tmpPixmap, 0, NULL );
XSetGraphicsExposures( display, BITMAP_monoGC, False );
XFreePixmap( display, tmpPixmap );
}
if (screenDepth != 1)
{
if ((tmpPixmap = XCreatePixmap(display, rootWindow, 1,1,screenDepth)))
{
BITMAP_colorGC = XCreateGC( display, tmpPixmap, 0, NULL );
XSetGraphicsExposures( display, BITMAP_colorGC, False );
XFreePixmap( display, tmpPixmap );
}
}
BITMAP_hbitmapMemDC = CreateBitmap( 1, 1, 1, 1, NULL );
return (BITMAP_hbitmapMemDC != 0);
}
/***********************************************************************
* BITMAP_BmpToImage
*
* Create an XImage pointing to the bitmap data.
*/
static XImage *BITMAP_BmpToImage( BITMAP * bmp, void * bmpData )
{
extern void _XInitImageFuncPtrs( XImage* );
XImage * image;
image = XCreateImage( XT_display, DefaultVisualOfScreen(screen),
bmp->bmBitsPixel, ZPixmap, 0, bmpData,
bmp->bmWidth, bmp->bmHeight, 16, bmp->bmWidthBytes );
if (!image) return 0;
image->byte_order = MSBFirst;
image->bitmap_bit_order = MSBFirst;
image->bitmap_unit = 16;
_XInitImageFuncPtrs(image);
return image;
}
/***********************************************************************
* CreateBitmap (GDI.48)
*/
HBITMAP CreateBitmap( short width, short height,
BYTE planes, BYTE bpp, LPSTR bits )
{
BITMAP bitmap = { 0, width, height, 0, planes, bpp, bits };
#ifdef DEBUG_GDI
printf( "CreateBitmap: %dx%d, %d colors\n",
width, height, 1 << (planes*bpp) );
#endif
return CreateBitmapIndirect( &bitmap );
}
/***********************************************************************
* CreateCompatibleBitmap (GDI.51)
*/
HBITMAP CreateCompatibleBitmap( HDC hdc, short width, short height )
{
DC * dc;
#ifdef DEBUG_GDI
printf( "CreateCompatibleBitmap: %d %dx%d\n", hdc, width, height );
#endif
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
return CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL );
}
/***********************************************************************
* CreateBitmapIndirect (GDI.49)
*/
HBITMAP CreateBitmapIndirect( BITMAP * bmp )
{
BITMAPOBJ * bmpObjPtr;
HBITMAP hbitmap;
/* Check parameters */
if (!bmp->bmHeight || !bmp->bmWidth) return 0;
if (bmp->bmPlanes != 1) return 0;
if ((bmp->bmBitsPixel != 1) && (bmp->bmBitsPixel != screenDepth)) return 0;
if (bmp->bmHeight < 0)
bmp->bmHeight = -bmp->bmHeight;
if (bmp->bmWidth < 0)
bmp->bmWidth = -bmp->bmWidth;
/* Create the BITMAPOBJ */
hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC );
if (!hbitmap) return 0;
bmpObjPtr = (BITMAPOBJ *) GDI_HEAP_ADDR( hbitmap );
bmpObjPtr->size.cx = 0;
bmpObjPtr->size.cy = 0;
bmpObjPtr->bitmap = *bmp;
bmpObjPtr->bitmap.bmBits = NULL;
bmpObjPtr->bitmap.bmWidthBytes = (bmp->bmWidth*bmp->bmBitsPixel+15)/16 * 2;
/* Create the pixmap */
bmpObjPtr->pixmap = XCreatePixmap( display, rootWindow, bmp->bmWidth,
bmp->bmHeight, bmp->bmBitsPixel );
if (!bmpObjPtr->pixmap)
{
GDI_HEAP_FREE( hbitmap );
hbitmap = 0;
}
else if (bmp->bmBits) /* Set bitmap bits */
SetBitmapBits( hbitmap, bmp->bmHeight*bmp->bmWidthBytes, bmp->bmBits );
return hbitmap;
}
/***********************************************************************
* GetBitmapBits (GDI.74)
*/
LONG GetBitmapBits( HBITMAP hbitmap, LONG count, LPSTR buffer )
{
BITMAPOBJ * bmp;
LONG height;
XImage * image;
bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return 0;
#ifdef DEBUG_BITMAP
printf( "GetBitmapBits: %dx%d %d colors %p\n",
bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
1 << bmp->bitmap.bmBitsPixel, buffer );
#endif
/* Only get entire lines */
height = count / bmp->bitmap.bmWidthBytes;
if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
if (!height) return 0;
if (!(image = BITMAP_BmpToImage( &bmp->bitmap, buffer ))) return 0;
XGetSubImage( display, bmp->pixmap, 0, 0, bmp->bitmap.bmWidth, height,
AllPlanes, ZPixmap, image, 0, 0 );
image->data = NULL;
XDestroyImage( image );
return height * bmp->bitmap.bmWidthBytes;
}
/***********************************************************************
* SetBitmapBits (GDI.106)
*/
LONG SetBitmapBits( HBITMAP hbitmap, LONG count, LPSTR buffer )
{
BITMAPOBJ * bmp;
LONG height;
XImage * image;
bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return 0;
#ifdef DEBUG_BITMAP
printf( "SetBitmapBits: %dx%d %d colors %p\n",
bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
1 << bmp->bitmap.bmBitsPixel, buffer );
#endif
/* Only set entire lines */
height = count / bmp->bitmap.bmWidthBytes;
if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
if (!height) return 0;
if (!(image = BITMAP_BmpToImage( &bmp->bitmap, buffer ))) return 0;
XPutImage( display, bmp->pixmap, BITMAP_GC(bmp), image, 0, 0,
0, 0, bmp->bitmap.bmWidth, height );
image->data = NULL;
XDestroyImage( image );
return height * bmp->bitmap.bmWidthBytes;
}
/***********************************************************************
* BMP_DeleteObject
*/
BOOL BMP_DeleteObject( HBITMAP hbitmap, BITMAPOBJ * bitmap )
{
XFreePixmap( display, bitmap->pixmap );
return GDI_FreeObject( hbitmap );
}
/***********************************************************************
* BMP_GetObject
*/
int BMP_GetObject( BITMAPOBJ * bmp, int count, LPSTR buffer )
{
if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
memcpy( buffer, &bmp->bitmap, count );
return count;
}
/***********************************************************************
* BITMAP_SelectObject
*/
HBITMAP BITMAP_SelectObject( HDC hdc, DC * dc, HBITMAP hbitmap,
BITMAPOBJ * bmp )
{
HBITMAP prevHandle = dc->w.hBitmap;
if (!(dc->w.flags & DC_MEMORY)) return 0;
dc->u.x.drawable = bmp->pixmap;
dc->w.DCSizeX = bmp->bitmap.bmWidth;
dc->w.DCSizeY = bmp->bitmap.bmHeight;
dc->w.hBitmap = hbitmap;
/* Change GC depth if needed */
if (dc->w.bitsPerPixel != bmp->bitmap.bmBitsPixel)
{
XFreeGC( display, dc->u.x.gc );
dc->u.x.gc = XCreateGC( display, dc->u.x.drawable, 0, NULL );
dc->w.bitsPerPixel = bmp->bitmap.bmBitsPixel;
/* Re-select objects with changed depth */
SelectObject( hdc, dc->w.hPen );
SelectObject( hdc, dc->w.hBrush );
}
return prevHandle;
}
/***********************************************************************
* CreateDiscardableBitmap (GDI.156)
*/
HBITMAP CreateDiscardableBitmap(HDC hdc, short width, short height)
{
printf("CreateDiscardableBitmap(%04X, %d, %d); "
"// call CreateCompatibleBitmap() for now!\n",
hdc, width, height);
return CreateCompatibleBitmap(hdc, width, height);
}
/***********************************************************************
* GetBitmapDimensionEx (GDI.468)
*/
BOOL GetBitmapDimensionEx( HBITMAP hbitmap, LPSIZE size )
{
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return FALSE;
*size = bmp->size;
return TRUE;
}
/***********************************************************************
* GetBitmapDimension (GDI.162)
*/
DWORD GetBitmapDimension( HBITMAP hbitmap )
{
SIZE size;
if (!GetBitmapDimensionEx( hbitmap, &size )) return 0;
return size.cx | (size.cy << 16);
}
/***********************************************************************
* SetBitmapDimensionEx (GDI.478)
*/
BOOL SetBitmapDimensionEx( HBITMAP hbitmap, short x, short y, LPSIZE prevSize )
{
BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
if (!bmp) return FALSE;
if (prevSize) *prevSize = bmp->size;
bmp->size.cx = x;
bmp->size.cy = y;
return TRUE;
}
/***********************************************************************
* SetBitmapDimension (GDI.163)
*/
DWORD SetBitmapDimension( HBITMAP hbitmap, short x, short y )
{
SIZE size;
if (!SetBitmapDimensionEx( hbitmap, x, y, &size )) return 0;
return size.cx | (size.cy << 16);
}